CellWalkR: an R package for integrating and visualizing single-cell and bulk data to resolve regulatory elements.

SUMMARY: CellWalkR is an R package that integrates single-cell open chromatin data with cell type labels and bulk epigenetic data to identify cell type-specific regulatory regions. A Graphics Processing Unit (GPU) implementation and downsampling strategies enable thousands of cells to be processed in seconds. CellWalkR's user-friendly interface provides interactive analysis and visualization of cell labels and regulatory region mappings. AVAILABILITY AND IMPLEMENTATION: CellWalkR is freely available as an R package under a GNU GPL-2.0 License and can be accessed from https://github.com/PFPrzytycki/CellWalkR with an accompanying vignette. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.